var xmlHttp;
		
        function show_Id(str)
        {
        	if(str == "")
        	{}
        	else
        	{
            	xmlHttp=GetXmlHttpObject();
            	if (xmlHttp==null)
            	{
                	alert ("Your browser does not support AJAX!");
                	return;
            	}
            	var url = "getId";
            	url = url+ "?name=" + str;
            	xmlHttp.onreadystatechange = stateChanged;
            	xmlHttp.open("GET",url,true);
            	xmlHttp.send(null);
        	}
        }
        
        function stateChanged()
        {
        	
        	if (xmlHttp.readyState == 4)
        	{
        		var xmlDoc = xmlHttp.responseXML.documentElement; 
        		var id=xmlDoc.getElementsByTagName("id")[0].childNodes[0].nodeValue;
        		alert("your id is"+id);
        	}
        }
        
        function GetXmlHttpObject()
        {
            var xmlHttp = null;
            try
            {
            // Firefox, Opera 8.0+, Safari
                xmlHttp = new XMLHttpRequest();
            }
            catch (e)
            {
            // Internet Explorer
                try
                {
                    xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
                }
                catch (e)
                {
                    xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
                }
            }
            return xmlHttp;
        }